The longest day: Allies invade Normandy on D-Day

"You are about to embark upon the great crusade toward which we have striven these many months. The eyes of the world are upon you...I have full confidence in your courage, devotion to duty and skill in battle." — Ike

Galerie Bilderwelt/Getty Images

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D-Day: Soldiers of the 3rd Canadian Infantry Division have set up an anti-aircraft Bofors 40 mm/L60 with the British-designed Stiffkey Sight.

Galerie Bilderwelt/Getty Images

18of35

D-Day: Soldiers of the 3rd Canadian Infantry Division have set up an anti-aircraft Bofors 40 mm/L60 with the British-designed Stiffkey Sight.